in iran starting friday reports say i ran's navy will hold the thrill from 6 days. they will deploy ships and submarines and also test fire missiles. ainsley? >> brace yourselves. a hpotential strike by union workers might stark another recession. diane macedo has the story for us. >> business groups and state officials are calling on president obama to use emergency powers to avoid a coast wide shut down warning that could cost billions of dollars. weeks after a western complex rauz crippled by a strike. that strike is estimated to have cost the u.s. 1 billion a day. this new phonings strike could effect more than 14,000 workers. together they handle 97 percent and could show supply chain across the entire country. the big issue is the labor dispute between the association which represent staff workers and maritime alliance. the talks between the two broke down december 18th and the union could strike if they can't reach an agreement before the latest contracts expire on december 29th. both sides get to agree on wages the sticking point is container royalties payme